Control System's In Production Application

With the development of the computer technology, the mechanics of communication, the integrated circuit technology's development, the industrial automation domain basically transited from the convention instrument system to the computer control system. In the scale big automation control situation, like the petrochemical, the metallurgy and the electric power profession, PLC (programmable controller), DCS (collection and distribution control system) basic already popularized, these systems have brought the high grade control and the management benefit for the production. The fieldbus control system (FCS) technology is one brand-new industrial control technology which the mid-1980s internationally developed, its appearance has caused traditional PLC and the DCS control system basic structure revolutionary change. The field bus technology simplified the tradition control system to be tedious enormously, and the technique content low wiring work load, caused its system examination and the control unit distribution hastens reasonably, take the total character style field bus (FIELDBUS) as representative's interconnection standard, rapid development and expansion.In PLC and in DCS system, but also widely uses 1~5V or the 4~20mA simulated signal transmits the scene parameter, but the field bus signal's transmission may do from the sensor to main engine's entire digitization, only uses a communication electric cable, was opposite in former PLC, DCS reduced the massive signal cable, it simultaneously allowed in system's equipment to distribute in a big spatial region. FCS took one kind of more outstanding computer control plan already officially to apply in the industry scene and obtains successfully.Will use the field bus to make the control system structure to be simple, the system installation expense will reduce, and easy to maintain, the user may the free choice different manufacturer, the different brand field apparatus achieve the best system integration and so on a series of merits, the field bus technology is being valued people's more and more. In the system, from scene sensor to the control room controller, all equipment intellectualization, supports the field bus completely. System structure aspect, before is applies in the big system, along with system cost reduction, will also obtain the application in the small system, simultaneously will also present the subminiature intelligent observation installment. Will support the field bus technology each kind of intelligent observation module is in a FCS kind of member, the intelligent observation module trend of development will be the multi-varieties, multi-purpose, the high intelligence, programmable, can support many kinds of standard agreement . Has obtained the massive applications along with FCS, was related the first floor observation hardware product with it also to obtain the enormous development, these product scope was widespread, has the sensor, the transmitting instrument, to control the actuator, the intelligent module, the network equipment, PLC and so on. In develops and in the application stratification plane, at present the overseas computer control technology was very already mature, the FCS control system already massively applied. Field bus technological advances and so on technology standard and first floor hardware. The home in FCS and the field bus technical equipment aspect is mainly the introduction and the application, the field bus technical standard completely uses the overseas standard.Has applied PLC, DCS and the FCS three kind of control system type in Our company's nickel carbonyl and the carbonyl iron two production lines, obtained has applied well.